Electric lighting device and manufacture thereof



March 8, 1938. H. A. DOUGLAS I 2,110,134

ELECTRIC LIGHTING DEVICE AND MANUFACTURE THEREOF Filed Jan. 21, 1935 5 Sheets-Sheet l Haas-r5 A Douglas 1 nu vlrw TOR ATTOKMiQS March s, 1938. 4 HA. DOUGLAS 2,110,134

ELECTRIC LIGHTING DEVICE AND MANUFACTURE THEREOF Filed Jan. 21, 1935 3 Sheets-Sheet 2 Haxr A-De slas I N VLN OK ATTORNLS March 8, 1938.,

H. A.. DOUGLAS 2,110,134 ELECTRIC LIGHTING DEVICE AND MANUFACTURE THE REOF Filed Jan. 21, 1935 3 Sheets-Sheet 3 I v .D I 13322 .ATToRuz s Patented Mar. 8, 1938 UNITED STATES ELECTRIC LIGHTING DEVICE AND MANU- FACTURE THEREOF Harry A. Douglas, Bronson, Mich, assignor to Kingston Products Corporation, a corporation of Indiana Application January 21, 1935, Serial No. 2,123 16 Claims. (01. 176-7) My invention relates to electric lighting devices and the making of such devices. -More parautomobile head-lamps, and the making of such devices. The principal object of my invention is to provide a newand improved device of these types, including a new and improved method and apparatus for making the same. In the drawings accompanying this specification, and forming part of this application, I have shown, for purposes of illustration, certain "forms which my invention may assume; in these drawings:

Figure l is a side elevational view, partly in section, of one embodiment of my invention,

Figure 2 is a fragmentary view of one face of a mounting, a

Figure 3 is a perspective view of a detail of Figure 1,

Figure 4 is a front view of a mounting, with the detail of Figure 3 not completely assembled therewith,

Figure,5 is a front view, of the parts shown in Figure 4, completely assembled,

Figure 6 is a section taken along the line 6-6 of Figure 1,

Figure 1 is a fragmentary sectional view, enlarged, taken on the line 1'-1 of Figure 6,

Figure 8 is a view similar to Figure 7 with the partsin a different position,

Figure 9 is a side elevational view, partly in section, of another embodiment-of my invention,

Figure 10 is a front view, partly in section, of parts of the embodiment of Figure 9, partly assembled,

Figure 11 is a sectional view of the same parts as in Figure 10, with the parts completely assembled, the section being taken along the line i ll l of Figure 9,

Figure 12 is a detail view of a part illustrated in Figures 9.through 11, v

Figure 13 is a view of a detail similar to Figure 12 but with the parts in a difierent position, and Figure 14 is a side elevation, partly diagrammatic, of apparatus for carrying out the method of making one of the parts of the embodiments hereinbefore referred to, said figure including also another embodiment of said part.

Referring to Figure 1, there is here shown an incandescent electric lamp connected to a mounting 2 I. The mounting 2| may be a reflector oi parabolic form. The lamp 20 comprises a bulb 22 containing a pair of filaments 23, 24. The filament 23 is here shown as disposed on the axis of the lamp, whereas the filament 24 is displaced irom that axis. The lamp 20 includes means providing a base 25 ior'the lamp. The base means here shown includes a generally cylindrical shell member 26 in which the bulb 22 is secured in a well known manner. The base means includes a lateral extension, which in this instance is shown as including a cylindrical portion 21 surrounding the shell 26, the cylindrical portion 21 being integrally joined to another cylindrical portion or skirt 28 by a curved annular portion 29. The skirt 28 is spaced from the shell 26, andmay have its edge 30 rounded if desired. The cylindrical portion 21 may be fastened to the shell 26 in any suitable manner. The skirt portion 28 is provided with a plurality of laterally extending portions 3|, 32, 33. The pertions 31, 32, 33 are shown as struck out from the skirt 28, and. each struck out portion is shown as comprising a pair of radially outwardly extending portions 34, 35 and a circumferential portion 36, joining the ends of the radially extending portions 34, 35, the portions 34, 35, 36

. forming an aperture extending in an axial direction.

The mounting 21 is provided with a circular aperture 31, the diameter of which is enough larger than the diameter of the skirt 28 so that the skirt 28 may be readilyslipped through the aperture 31.

The base 25 is adapted to cooperate with a socket means or connecting means 38. For convenience the connecting or socket means will be referred to as socket means. The socket means comprises a generally cylindrical shell 39 provided with a radially extending flange 40 from which extend in an axial direction a plurality of circumferentially spaced portions or bars 41, 42, 43, shaped in this instance to form hooks. All of these hooks, in the illustrated embodiment, are of the same form so that in the following description reference may be had to the hook 43 which may be most clearly seen in Figure 3.

The hook 43 comprises a throat 44 and a mouth 45 which is partly closed by a lip 46. The lip 46 is of triangular form providing a pair of cam surfaces 41, 48. If desired the end of the hook may have its corners 49, 50 beveled oii. The

cam surface 41 extends to the bottom 51 of the inouth of the hook.

The width of the hook between the outer edge 52 of the lip 46 and the edge 53 of the back of 1 the throat 44 of the hook is such as to pass freely through apertures 54, 55, 56 respectively, in the mounting 2|. The apertures 54, 55, 56 are here shown as constituting radial extensions of dial extensions of the aperture 51.

the aperture 31. The throat 44 of each hook Y is of a width to fit the circumferential width of a set of apertures 51, 58, 59 respectively, which apertures also are here shown as constituting ra- The apertures 54, 51 and 55, 58 and 56, 59 are separated respectively by radially inwardly extending projections 68, 6|, 62, the sides of these projections defining edges of the apertures 51, 58, 59 being substantially radial, whereas the other sides are in the form of cam surfaces 63, 64, 65.

The radially outer margins of the apertures 54, 55, 56 and 51, 58, 59 lie on a circle having a diameter substantially the sameas the diameter of the cylindrical surface defined by the outer peripheries of the hooks 4|, 42, 43, the radial extent of these apertures being substantially the same as the radial thickness of the hooks.

In connection with one use to which the embodiment of Figures 1 through 8 may be put, the hooks 4|, 42, 43 are desirably unequally spaced about the axis of the socket means 38, the sets of apertures 51, 58, 59 and 54, 55, 56, and the extensions 3|, 32,33, being correspondingly unequally spaced about the center of the aperture 31 and the axis of the base of the lamp respectively, as illustrated in Figures 1 through 6.

The socket. means 38 is provided with an insulating member 66, adjacent one side of which are radially inwardly extending diametrically opposite segmental flanges 61, 68 provided on the shell portion 39. The insulating member 66 may be fastened to the shell portion 39 by means of tongues, two of which 69, 18 are visible in Figure 1. These tongues may be clinched over the outside of the insulating member 66. A composite leaf spring 1| may be interposed between the insulating member 66 and the segmental flanges 61, 68, so that the spring is also held between the flanges and the clinched-over tongues 69, 16. The spring 1| may include an annular part 12, having an aperture large enough to pass the shell 39, the part 12 being provided with a desired number of radially inwardly extending projections 13 against which the insulating member 66 is adapted to be pressed. The spring 1| is here shown as provided with three legs, two of which 14, 15 are visible in Figure 3. The legs 14, 15 of the spring are bowed radially outwardly intermediate their ends and their point of connection to the annular portion 12.

The insulating member 66 is here shown as carrying a pair of contacts 16, 11, each of these contacts being connected to a conductor, only one of which, 18, is visible. The conductor passes through a'sleeve 19 provided with a flange 80 adapted to be engaged by the head of the contact 16. The sleeve 19 is slidable in a bushing 8|, the bushing passing thro gh-the: insulating member 66 and being fixed tl i breto in any suitable manner as by providing beads 82 on the bushing. A spring 83 is provided for urging the contact 16 away from the insulating member 66, the spring 83 'at one end abutting the flange 80 and at the other end the bushing 8|. The contact 11 is similarly resiliently mounted.

The contacts 16, 11 are adapted to engage a pair of contacts 84 provided on the base of the lamp 20, only one of the contacts 84 being visible in Figure 1. The filament 23 of the lamp may have one of its terminals connected to one of the contacts 84 and its other terminal to the shell 26. The filament 24 may likewise have one .of its terminals connected to the shell 26 and its other terminal connected to a different one of the contacts 84, as will be obvious to those skilled in the art. I

The assembly and operation of the embodiment of the invention illustrated in Figures 1 through 8 is as follows. When it is desired to assemble the socket means 38 with the mounting 2|, the hooks 4|, 42, 43 are inserted through the apertures 54, 55, 56 respectively, against the bias of the composite spring 1|, the ends of which abut the rear face of the mounting, until the lip portions 46 of the hooks extend beyond the front face'bf the mounting 2|. The parts are then in the position shown in Figure 4. The socket means is then rotated in a counter clockwise direction, as viewed in Figure 4. Such rotation causes the throat portions 44 of the hooks to engage the cam surfaces 63, 64, 65, thereby forcing the throat portions radially inwardly. Counter clockwise rotation of the socket means is continued until the trailing edges 53 of the throat portions 44 snap off of the projections 66, 6|, 62, the throat portions moving radially outwardly and becoming seated in the apertures 51, 58, 59.

The parts are then in the position shown in Fig ure 5. When axial pressure on the socket means is removed, the composite spring 1| acts to move the socket means axially toward the right as viewed in Figure 1, thereby pulling the apexes of the triangular lips 46 against the front face of the mounting 2| The socket means and mounting are now ready to have an incandescent lamp connected thereto. The lamp, such as 20, may have its base 25 brought into register with the inner periphery of the hook portions 4|, 42, 43, and with the lateral extensions 3|, 32, 33 so positioned that by moving the lamp 26 axially toward the mounting 2| the extensions 3|, 32, 33 will come into abutment with the front face of the mounting 2|. The lamp 26 is then rotated toward the mouth portions 45 of the hooks to thereby bring the leading portions 35 of the lateral extensions 3|, 32, 33 against the respective cam surfaces 48 of the lips of the hooks, as shown in Figure 8. Further rotation of the lamp 28 in the same direction causes the portions 35, by cam action on thesurfaces 48, to pull the hooks 4|, 42, 43 further through the mounting 2|, against the bias of the composite spring 1|. When the trailing edge of the portion 35 passes the apex of the lip portions 46, the parts are brought to the position shown in Figure 7 in which the ends of the lip portions 46 of the hooks are disposed in the axially extending apertures formed between the radial portions 34, 35 of the extensions 3|, 32, 33. The parts are so proportioned that the apex of the lip portions 46 is then out of contact with the front face of the mounting 2|, so that surfaces of the lateral extensions 3|, 32, 33, opposed to the face of the mounting, are maintained in firm engagement and registry with the. front face of the mounting 2|.

The hereinbefore described embodiment of my invention is well adapted for use where the aperture 31 is'an aperture located in the crown of a parabolic reflector, concentric with the axis of the reflector. For such use the lamp is prefocused, that is, the position of the lateral extensions 3|, 32, 33 is so chosen that the general plane of these extensions is so positioned that the lighting center of the filament 23 is not only on the axis of the reflector but is at the focal point of the reflector. The filament 24, which may be used either alone or in combination with the filament 23, therefore is also disposed at a 74 3|, 32, 33. Furthermore, the contacts 84 in the a base are caused to properly engage the desired respective contacts 16, 11 so that the switching .device (not shown) connected to the contacts 16, 11 will be able to cause current flow in the filaments 23, 24 in the desired relations.

Figures 9 through 13 illustrate another embodiment of my invention, in which the lamp 20, here shown as identical with the lamp 20 of Figure 1, is assembled with a mounting 85 having a circularaperture 86 which is of such diameter as to freely pass the skirt 28 of the base of the lamp 28.

A connecting means or socket means 81 is provided, having a shell portion 88. The shell portion 88.has "a radial flange 89 provided with axially circumferentially spaced portions 98, 9|, 92 made in the form of hooks. The outer peripheries of the portions 90, 9|, 92 define a cylindrical-surface, with exceptions to be noted hereinafter.

Each hook has a throat portion 93 and a mouth 94, along with a lip portion 95 partially closing the mouth of thehook. The lip 95 may have a beveled outer corner to act as a cam surface, if desired. The bottom 96 of the mouth of each hook is adapted to overlie portions 91, 98, 99 of the mounting 85. The radially inner edges of the portions 91, 98, 99 are defined by the aperture 86.

The edges of each of the hooks 98, 9I, 92 opposite the lips 95, are undercut from the ends of the hooks, the undercut extending axially along a line I00, partially into the throat portion 93, to a shoulder I8I. The shoulder IN is axially spaced from the bottom 98 of'the mouth of the hook by an amount substantially the same as the thickness of the mounting 85.

The throat portions 93 of the hooks to and including the edges I of the hooks are bent radially outwardly, so that, as can be seen in Figures and 11, the bent throat portions have radially outer surfaces tangent to the cylindrical surface defined by the hooks 90, 9|, 92.

.Those portions of the throat portions 93 which terminate in the shoulders IOI- are also bent radially outwardly, in this instance slightly more than the edges I00.

The reduced parts of the throat portions 93 of the hooks are adapted to be seated in apertures I02, I03, I04 in the mounting 85. The lips 95 of the hooks are adapted to be seated in apertures I05, I06, I01 respectively. The apertures I02, I03, I04 and I85, I06, I01 are here shown as constituting radially outwardly extending portions of the aperture 86 to thereby form the portions 91, 98, 99 of the mounting, of a radial extent substantially the same as the thickness of the hooks.

The mounting 85 is provided with another set of apertures I88, I09, IIO, which, when the hooks 98, 9I, 92 are assembled with the mounting, are

adjacent the circumferentially outer edges of the lips 95, and extend radially beyond the radially outer margins of the apertures I05, I06, I81.

The mounting 85 is provided with another set of apertures III, H2, H3 adjacent the set of apertures I82, I83, I04, and both of these sets of apertures have radially outer margins which are at an angle to a radius of the aperture 86, substantially the same as the angle of the tangent bent portion of the throats 93. These sets of apertures consequently form triangular projections H4, H5, H6, the apexes of which lie on a circle larger than the aperture 86 by an amount substantially equal to the radial thickness of the hook portions 98, SI, 92. The circumferential width of each of the pairs of apertures I02, III and I03, H2 and I04, H3 is sufiicient respectively to pass the circumferential width of the reduced ends of the hooks respectively. Due to the unequal circumferential spacing of the apertures I82, I83, I 04, the aperture II2 merges with the aperture H0.

The socket means may be provided with an insulating contact carrier II1 similar to the contact carrier 66 of Figure 1, but in this instance no spring H is provided, so that the contact carrier II1 directly abuts radially inwardly extending segmental flanges H8, H9 on the shell portion 88. The contact carrier II1 may be fastened to the shell member 88 by means of clinched tongues I28.

The contact carrier H1 is here shown as carrying a pair of contacts I2I, I22 which are connected to conductors and resiliently biased toward the contacts 84 on the lamp base in a'manner the same as already described in connection with Figure 1.

The embodiment of the invention illustrated in Figures 9 through 13 is assembled and operated in the following manner. The hook portions 98, 9|, 92 are brought into registry with the pairs of apertures I02, III and I83, H2 and I04, II3 respectively and thrust through these composite apertures until the shoulders I8I abut the rear face of the mounting 85. The socket means is then rotated in a counter clockwise direction, as viewed in Figure 10, whereby the triangular portions H4, H5, H6 force the hooks radially inwardly. As the counter clockwise rotation continues the leading edges of the lips 95 ride radially inwardly up onto the inner peripheries of the mounting portions 91, 98, 99, which action may be assisted by the beveled edges of the portions 91, 98, 99. Further counter clockwise ro- .tation causes the trailing edges of the lips 95 to snap into the apertures I85, I86, I81. At the same time the trailing edges I80 of the hooks snap off of the triangular projections H4, H5, H6, thereby seating the reduced portions of the necks 93 in the apertures I02, I83, I84 respectively. The parts are then in the position shown in Figure 11, in which the socket means is latched both against rotational movement in either direction, and against any substantial axial movement in either direction.

In the assembled position of the socket means in the mounting 85, the lips 95 of the hooks extend in an axial direction toward the right, as viewed in Figures 9,12, and 13, beyond the rear face'of the mounting 85, a predetermined desired amount.

The parts as shown in the position in Figure 11 are ready to receive and have connected thereto a lamp 28. The lamp is first brought into registry with the skirt 28 of the base in registry with the aperture 86, and with the lateral extensions 3I, 32, 33 in registry with the apertures I08,- I09, H8. The lamp is then moved axially, against the bias of the contacts I2I, I22, thereby causing the lateral extensions 3I, 32, 33 to pass through the apertures. I88, I89, II8 to a position axially beyond the rear face of the-mounting 85.

from Figures 9 and 13. The resiliently biased' contacts I2I, I22 not only force the projections 3I, 32, 33 against the rear face of the mounting 85 but force the bottoms 96 of the. hooks against the front face of the mounting.

As in the embodiment of Figures 1 through 8, the embodiment of Figures 9 through 131 is adapted to be used in instances where the aperture 86 is located on the axis of a parabolic reflector. For reasons already pointed out in connection with Figures 1 through 8, the lamp 20 may be of the re-focused type, which is accomplished by properly locating the lateral extensions 3|, 32, 33 on the base with respect to the filament 23 and with respect to the focal point of the reflector.

The lateral extensions 3I, 32, 33 may be properly located on the base by making a lamp, complete except for the lateral extensions or positioning means 3I, 32, 33, then adjusting such a lamp to a predeterminedposition and then while the lamp is in that predetermined position forming the positioning means on the base.

This method may be carried out by apparatus, one embodiment of which is illustrated in Figure 14.

The apparatus shown in Figure 14 includes a support I23 desirably of insulating material, carrying a pair of contacts I24, I25 connected to conductors I26, I21 respectively. The contacts I24, I25 may, if desired, have slightly dished con tact surfaces. The conductors I26, I21 are disposed through sleeves I2B, I29 which are in turn slidable in bushings I30, I 3I suitably fixed to the support I23. The contacts I24, I25 are biased upwardly by springs I32, I33, and in general, the contacts I 24, I25 may be supported and biased in a manner similar to that already described in connection with the contacts 16, 11, of Figure 1.

The contacts I24, I 25 are adapted to be enga'ged by contacts I34, I35 carried by the lamp I36. The lamp I36 is similar to the lamp 20 hereinbefore described, but in this instance the lamp may have a-bulb I31 which is mounted in a base I38 having a shell portion I39 and a skirt portion I40 which is an integral part of the shell I39, spaced therefrom and cgmected thereto by the curved annular portion MI. The principal difference between the lamp I36 and the lamp 20 is that the skirt portion I40 forms an integral part of the. shell I39, whereas in the lamp'20' the base means is made in two parts comprising generally a shell portion 26 and the skirt portion 28 suitably fastened thereto. The lamp I36, as in the case of the lamp 20, may be provided with a pair of filaments I42, I43. 4

The lamp I36 may be held with its contacts I34, I35 in engagement with the contacts I24, I25, and adjusted with respect to these contacts and the support I23, by means which includes a dished member I44 adapted to engage the top of the bulb I31. The member I44 may be provided with a stem I45 sli'dablethrough an aperture I46 in a lever I41. The movement of the stem I45 may be limited by a collar I48 on the stem. Where the stem I45 is movable with respect to the lever I41, a spring I49 may be interposed betwen the dished member I44 and the lever, biasing the member I44 away from the lever.

The lever I41 is here shown as connected by means of a ball and socket joint I50 to a lever I5I. The lever I5I may be provided'with a socket I52 adapted to receive a ball I53 on the end of the lever I41. The opening I54 may be limited so as to limit the range of movement of the lever I41 with respect to the lever I5I.

The lever I5I may be mounted to swing in one plane about the pivot I56 carried by a bracket I55. The bracket may be provided with stops I51, I58 to limit the range of movement of the lever I5I. The lever I41 is desirably provided with a handle I 59.

Die means I60 are provided for forming the positioning means on the lamp base. For the sake of clearance only one die means has been shown, but it isto be understood that at least one other die means is preferably utilized, and in the case of making pre-focused lamps preferably three die means are used. The three die means are then disposed at equalradial distances from a line, midway between the axes of the contacts I24, I25, parallel to said axes. Furthermore, the three die means are desirably spaced circumferentially at predetermined points with reference to the general plane of the contacts I24, I25.

The die means I 60 is here shown as including a pair of dies I6I, I62, the die element I6I being of the matrice type and the die element I62 of the punch type. The matrice die element has a recess I63, which is of the same axial length as that of a punch projection I64 on the die element I62. The circumferential width of the recess I63 is the same as the desired circumferential distance between the outer faces of the radially extending portions 34, 35 of the lateral extensions 3I, 32, 33. On the other hand, the circumferential width of the punch portion I64 is the same as that between the inner faces of the portions 34, 35; It of course will be understood that the shape and dimensions of the matrice and punch portions of the die means I60 will depend upon the form of lateral extensions it is desired to make.

The die elements I6I and I62 may have their opposing faces provided with recesses I65, I66, to enable a skirt portion such as 28, having a rounded edge 30, to be properly worked upon.

The die elements I 6 I I62 are shown as mounted on a pivot. I 61 carried by a lever I68. The die elements I6I, I62 are provided respectively with on the elements I 6|, I 62 respectively. Separation of the upper ends of the die elements I6I, I62 is limited to a predetermined extent by engagement of the pin "I with the cam surface I10. The lever I68 may be mounted on a pivot I 14 on a stationary bracket, and may be biased to a predetermined position by means of springs I11, I18 respectively. The spring I11 may have one end attached to a stationary bracket I15 and the other end to a pin I19 on the lever I68, and the spring I18 may have one end attached to the pin I19 and the other end to a stationary bracket I16.

The die elements I 6 I, I62 may be moved toward each other by means of an operating member I80 having at the upper end thereof two cam surfaces I8I, I82 forming a V-shaped cam cooperable with the cam surfaces I69, I10. It is to be understood that-there will be as many operating mem- .until it rests on' top of the solenoid. Thus when the solenoid is deenergized there is a gap between the upper end of the operating member I80 and the surfaces I69, I10.

'I he solenoid I86 is shown as connected to a pair of line wires I81, I88, the connection having a switch or push button I89 interposed therein The conductors I26, I21 may also be connected to the line wires I81, I88 through a switch I90. The switch I90 and the push button I89 may be mounted at any. place most convenient for the operator of the apparatus.

The apparatus illustrated in Figure 14 may be operated as follows, to carry out the hereinbefore referred to method of making pre-focused lamps. The lamp, with its filaments in predetermined relation to the support I23, is placed with its contacts I34, I35 in engagement with the contacts I24, I25, the skirt portion I40 being interposed between the separated die elements I6I, I62, it being assumed that the operating member is out of engagement with the cam surfaces I69, I10. The switch I90 is closed, thereby lighting both of the filaments, if the connections are as hereinbefore described with regard to the lamp 20. The dished shaped member I44 is then brought down on top of the bulb I31 by means of the handle I59 and the lamp is depressed, and permitted to rise,- and moved about in horizontal planes, until a desired position is reached. For example, the lamp may be so moveduntil it is in that position in which an image of the filament I42, thrown upon a screen (not shown), is sharply defined. Under these circumstances the plane defined by the several die means I60 may be so predetermined with respect ,to the point at which the filament I42 produces a sharp image that that point, and therefore the coincident lighting center of the filament I42, will be in a line normal to the plane of the die means, with that normal line intersecting that plane at a. point equidistant from the several die means, and the distance of that point from that plane may be so chosen-that it will be the same as the distance of the focal point of the reflector from the plane defined by the points of contact between the surface of the reflector and z. the lateral extensions on the lamp base, such as the extensions 3I, 32, 33 on the lamp 20.

When the lamp I36 has been adjusted to the desired position, the button I89 is pressed thereby energizing the solenoid I86 and causing the operating means I80 to rise and strike the surfaces I69, I10 by reason of the lost motion between the upper end of the member I80 and the surfaces I60, I10, thereby to move the upper ends of the die elements I6I, I62 toward each other, against the opposite surfaces of the skirt I40. The die elements thereby strike out from the metal of the skirt I40 lateral extensions I9I similar to the extensions 3|, 32, 33 of the lamp 20. When the button I89 is released the operating member I80 descends and the die elements I6I, I62 are separated by the spring I13, thereby permitting removal of the lamp I36, after lifting of the dished member I44. The lamp I36 is now completely finished for use as a pre-focused lamp.

By mounting the die elements I6I, I62 on a floating pivot I61, the die elements are permitted to so adjust themselves when operating force is applied thereto that the skirt will not be distorted.

From the foregoing it will be apparent to those .skilled in the art that my invention provides a new and improved electric lighting device, made in a new and improved manner by new and im-, proved means, and accordingly accomplishing at least the principal object of my invention. On the other hand, it also will be obvious to those skilled in the art that the particular embodiments herein described may be variously changed and modified, without departing from the spirit of my invention, or sacrificing the advantages thereof.

In general, the disclosure herein is illustrative only, and my invention is not limited thereto.

1 claim:

1. The method of making a pre-focused electric incandescent lamphaving base means provided with means for positioning saidlamp with respect to a mounting means, comprising: adjusting to a predetermined position a lamp provided with base means lacking such positioning means, and so changing the form of said base means, while said lamp is in said predetermined position, as to provide a positioning projection extending generally radially outwardly from said base means as originally formed.

2. The method of making a pre-focused electric incandescentlamp having base means provided with means for positioning said lamp with respect to a mounting means, comprising: adjust ing to a predetermined position a lamp provided with base means lacking such positioning means, and forming a positioning projection on said base means, while said lamp is in said predetermined position, by striking outwardly material of said base means.

3. The method of making an electric incandescent lamp having base means provided with means for connecting said lamp to a mounting means, comprising: providing a bulbwith base ,means complete except for connecting means,

means by striking outwardly, material of said base means.

5. Apparatus for making electric incandescent iamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a mounting means; and forming means, including a carrier, die means movably mounted on said carrier for movement, in' a generally radial direction with respect to the axis of the lamp, and means for mounting said carrier for movement in said direction; said f orming means being constructed and arranged to be operable to form means on the base of the lamp for cooperative engagement with a mounting means.

6. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp being constructed and arranged to be operable to form means on the baseof the lamp for cooperative engagement with a mounting means.

8. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacldng means for cooperative engagement with a mounting means; and forming means, including a carrier, die means movably mounted on said carrier for movement in a generally radial direction with respect to the axis of the lamp, said die means including cooperable punch and matrice dies, and means for mounting said carrier for movement in said direction; said forming means being constructed and arranged to be operable to form means on the base of the lamp for cooperative engagement with a mounting means.

9. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a, mounting means; forming-means so constructed and arranged that it is operable to form means on the base of the lamp for cooperative engagement with amounting means; and means, including a single actuator, so constructed and arranged that manipulation of said actuator is adapted to hold the lamp on said supporting means and to adjust the lamp, with respect to said forming-means in the general direction of the axis of the lamp and in planes transverse to said axis.

10. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a mounting means: forming-means, including a carrier, die means movably mounted on said carrier for movement in a generally radial direction with respect to the axis of the lamp, and means for mounting said carrier for movement in said direction; said forming-means being constructed and arranged to be operable to form means on the base of the lamp for cooperative en a ement with a mounting means; and means, including an electroresponsive device, constructed and arranged to operate said forming-means.

11. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a mounting means torming-means, including a die, said forming-means being so constructed and arranged that it is operable to form means on the base of the lamp for cooperative engagement with a mounting means; and means, including an electroresponsive device, having a lost motion connection with said die, constructed and arranged to operate said die with a hammer blow.

12. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a mounting means; forming-means, including a' pair of cooperable dies, one of said dies being of the punch type and the other of the matrice type, said forming-means being so constructed and arranged that it is operable to form means on the base of the lamp for cooperative engagement with a mounting means; and means, including an electroresponsive device, constructed and arranged to operate said forming-means.

13. Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means for cooperative engagement with a mounting means; and forming-means, including a carrier, a pair of cooperable dies, both movably mounted on said carrier for movement in a generally radial direction with respect to the axis of the lamp, and means for mounting said carrier for movement in said direction, said forming-means being constructed and arranged to be operable to form means on the base of the lamp for cooperative engagement with a mounting means.

14.- Apparatus for making electric incandescent lamps, comprising: means for supporting a lamp having a base initially lacking means'for cooperative engagement with a mounting means; and forming-means, including a pair of cooperable dies, both movable with respect to a lamp supported by said supporting means, one of said dies being of the punch type and the other of the matrice type; said forming-means being constructed and arranged to be operable to form means on the base of the lamp for cooperative engagement with a mounting means.

15. The method of making a pre-focused electric incandescent lamp having base means provided with means for positioning said lamp with respect to a mounting means, comprising: ad- K justing to a predetermined position a lamp provided with base means lacking such positioning means, said base means including a shell portion and a part extending approximately parallel to and spaced from said shell portion, and so changing the form of said base means, while said lamp is in said predetermined position, as to provide a positioning projection extending generally radially outwardly from said part as originally formed.

16. The method of making an electric incan- A descent lamp having base means provided with means for connecting said lamp to a mounting means, comprising: providing a bulb with base means including a shell portion and a part extending approximately parallel to and spaced from said shell portion, said base means being complete except for connecting means, and then forming generally radially outwardly projecting connecting means on said part.

HARRY A. DOUGLAS. 

